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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.4, 2003³â, pp.223-233
¿¬¼ºÇÏÁßÀ» ¹Þ´Â ¸ð·¡´ÙÁü¸»¶Ò(SCP)ÀÇ °Åµ¿ºÐ¼®
( Analysis of Sand Compaction Piles Under Flexible Surcharge Loading )
È«ÀÇÁØ;±èÀç±Ç;Á¤»ó¼¶;±è¼öÀÏ; ¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;»ï¼º°Ç¼³¢ß, ¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú ´ëÇпø;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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¸ð·¡´ÙÁü¸»¶Ò(SCP)°ø¹ýÀº ´À½¼ÇÑ ¸ð·¡Áö¹ÝÀ̳ª ¿¬¾àÇÑ Á¡¼ºÅäÁö¹ÝÀ» ¾Ð¹ÐÃËÁø½Ã۰í ÁöÁö·ÂÀ» °­È­ÇÏ¿© Áö¹ÝÀ» °³·®ÇÒ ¸ñÀûÀ¸·Î Àû¿ëµÇ´Â °³·®°ø¹ýÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ÇöÀå»óÅÂ¿Í À¯»çÇÑ ¿¬¼ºº¯Çü(free strain) »óÅ·Πº¯ÇüÀÌ ÀϾ ¶§ ¸ð·¡¸»¶Ò°ú Áö¹ÝÀÇ »óÈ£ÀÛ¿ëÀ» ºÐ¼®Çϱâ À§ÇÏ¿© ¸ðÇüÅäÁ¶½ÇÇè ¹× 3-DÀ¯ÇÑ¿ä¼ÒÇØ¼®À» ½Ç½ÃÇÏ¿´´Ù. ±× °á°ú, ġȯÀ²ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ÇϺÎÀÇ ÀÀ·ÂºÐ´ãºñ°¡ Áõ°¡Çϰí ħÇÏ·® ¹× ¸ð·¡¸»¶Ò - Áö¹ÝÀÇ »ó´ëº¯À§´Â °¨¼ÒÇÏ¿´À¸¸ç ƯÈ÷ ÁöÇ¥¸é ħÇÏ·®ÀÌ Å©°Ô °¨¼ÒÇÏ¿´´Ù. 3-D À¯ÇÑ¿ä¼ÒÇØ¼®ÀÇ °æ¿ì ¸ð·¡¸»¶Ò - Áö¹Ý Á¢Ã˸鿡¼­ »ó´ëº¯À§°¡ ¹ß»ýÇϸç ġȯÀ²ÀÇ Áõ°¡¿¡ µû¶ó¼­ Á¢Ã˸éÀÇ »ó´ëº¯À§´Â °¨¼ÒÇÏ´Â °æÇâÀ» ³ªÅ¸³»¾ú´Ù. ÀÌ»óÀÇ °á°ú¸¦ ¹ÙÅÁÀ¸·Î ÀÀ·ÂÀüÀÌ ¸ÞÄ¿´ÏÁò¿¡ ´ëÇÑ ºÐ¼®À» ¼öÇàÇÏ¿´À¸¸ç ±× °á°ú, »ó´ëº¯À§°¡ ¹ß»ýÇÏÁö ¾Ê´Â´Ù´Â °¡Á¤ÇÏ¿¡ Á¦¾ÈµÈ ¸ð·¡¸»¶Ò ÁÖ¸éÀÇ ÀÀ·ÂÀüÀÌ À̷нÄÀº À¯ÇÑ¿ä¼ÒÇØ¼®°á°ú¿Í ºñ±³¸¦ ÅëÇÏ¿© »ó´ëº¯À§°¡ ¾ø´Â °æ¿ì´Â ¹°·Ð »ó´ëº¯À§°¡ ºñ±³Àû ÀÛÀº 5mm Á¤µµ±îÁöµµ Àû¿ë °¡´ÉÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
Sand compaction pile (SCP) is one of the ground improvement techniques which are being used for not only accelerating consolidation but also increasing bearing capacity of loose sands or soft clay grounds. In this study, laboratory model tests and 3-D finite element analyses were performed to investigate the interaction between sand compaction piles and surrounding soft soils. Based on the results obtained, as the area replacement ratio increases, the stress concentration ratio increases at the pile point, the settlement decreases, and the relative displacement between column and soil also decreases. It is also found that numerical study is illustrated by good comparison with model test results, and the numerical analysis revealed slip effects which could not be specifically identified in the model tests.
 
Ű¿öµå
Area replacement ratio;Finite element analysis;Free strain;Load transfer mechanism;Sand compaction piles(SCP);Soft ground;Stress concentration ratio;Unit cell;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.4, 2003³â, pp.223-233
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921886601)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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